Preparation and application of a phosphorous free

Authors: Guangqing Liu Mengwei Xue Jingyi Huang Huchuan Wang Yuming Zhou Qingzhao Yao Lei Ling Ke Cao Yahui Liu Yunyun Bu Yiyi Chen Wendao Wu Wei Sun

Publish Date: 2014/02/22

Volume: 9, Issue: 3, Pages: 545-553

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Abstract

A novel environmentally friendly type of calcium carbonate zinc II and iron III scale inhibitor Acrylic acidallylpolyethoxy carboxylate copolymer AAAPEL was synthesized The antiscale property of the AAAPEL toward CaCO3 zinc II and iron III in the artificial cooling water was studied through static scale inhibition tests The observation shows that both calcium carbonate zinc II and iron III inhibition increase with increasing the dosage of AAAPEL The effect on formation of CaCO3 was investigated with combination of scanning electronic microscopy SEM transmission electron microscopy TEM Xray powder diffraction XRD analysis and fourier transform infrared spectrometer respectively The results showed that the AAAPEL copolymer not only influenced calcium carbonate crystal morphology and crystal size but also the crystallinity The crystallization of CaCO3 in the absence of inhibitor was rhombohedral calcite crystal whereas a mixture of calcite with vaterite crystals was found in the presence of the AAAPEL copolymer Inhibition mechanism is proposed that the interactions between calcium or iron ions and polyethylene glycol PEG are the fundamental impetus to restrain the formation of the scale in cooling water systems

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